Framing gauge



Aug. 1, 1950 G. A. HOLMBERG FRAMING GAUGE 2 Sheets-Sheet 1 Filed Nov. 13, 1947 INVENTOR. GUS A. HOLMBERG BY n G. A. HOLMBERG FRAMING GAUGE 2 Sheets-Sheet 2 Filed Nov. 13, 1947 INVENTOR. GUS A. HOL MBERG BY Y I Patented Aug. 1, 1950 asmn s FRAMING GAUGE Gus A lflolrnberg, ni hwooa; 111.

' Application November 1 flij claim. (01.32490).

This invention relates. to framing gages and has special reference toa framingigage for use in laying-oifthe ends of roofing members such as rafters and the liken... l p l n One important object of this invention is to provide a very simpleqdevice for the purpose set forth wherewith a person comparatively unskilled may properly lay out rafters and the like as efiiciently as the most skilled house carpenter.

A second important ObjGCtaOf the invention is to provide a simpletool of this character whereby a "relatively'unskilled person may readil lay out the lines on a rafter to show the sawinglines for a rafter and wherein such end is inclined to two adjacent sides of a raften A third important object of theinvention is to provide a novel tool for the purpose set forthvand having direct reading means for setting the instrument to desired angles.

It is a further object of the invention to provide a gage structure which will withstand heavy and strenuous field use and the scale bearing member of which is particularly designed to resist undesirable deformation with consequent loss of accuracy of the instrument or possible inoperativeness thereof.

With the above and other objects in view, as will be presently apparent, the invention consists in general of certain novel details of construction and combinations of parts hereinafter fully described, illustrated in the accompanying drawings and particularly claimed.

In the accompanying drawings, like characters of reference indicate like parts in the several views, and

Figure 1 is a top plan view of the instrument constituting the invention;

Figure 2 is a side elevation of the marker-bearing plate with the remaining elements of the instrument properl positioned thereon;

Figure 3 is an end elevation of the markerbearing plate with the remaining elements of the plate properly positioned relative thereto;

Figure 4 is a detail sectional view taken on line 4-4 of Figure 1;

Figure 5 is a composite schematic diagrammatic view showing various types of roofs wherein rafter side cuts are required, some of the diagrams including the schematic position of the implement to ascertain the controlling angle for the side out;

Figure 6 is a diagram showing the application of the tool to a diagram of an even pitch roof;

Figure '7 is a similar view of an uneven pitch roof;

3, 1947, Serial No. 785,738

Figure 8 is a schematic view showing the application of the implement to the side of an embryo rafter, the view indicating an intermediate stage in the marking of the rafter for the production of a side out;

Figure 9 is a schematic top plan view of the completion of the stage development shown in Figure 8,; with the implement in. position to permit marking of the line of cut to be made;

Figurellli is a schematic view in side elevation of the assemblage of Figure 9 l l Figure 11 is a schematicadiagram of an octagon roof, showing the implement positioned relative thereto toobtain the side out angles for the hip rafters and the jack rafters respectively;

' Figure: 12 is a diagram of a hexagon showing the implement applied for obtaining the mitering angle;

Figure 13 is a schematic diagrammatic view showing the use of the implement for providing the marking for the miter cut of a roof plate;

Figure 14 is a schematic view showing the use of the tool in developing the length value of a roof plate; and

Figure 15 is a schematic diagrammatic view indicating the manner in which the implement is used in the production of plumb and level cuts, and also the length of rafter.

In the embodiment of the invention as here shown there is provided a flat plate Ill whereon is mounted a marker blade I l, the mounting being effected by a thumb-screw 12 passing through a slot l3 extending longitudinally Of the blade. This blade is so beveled as to provide sub-acute side edges in the plane of theblade bearing surface of the plate I0. Hinged to that edge of the plate Ill from which the blade ll projects is a plate I 4 of substantially the same size as the plate. Fixed to the free edge of the plate l4 and extending cencentrically of the hinge axis is an arcuate gage member I5 which is U-shaped in cross-section, as shown in Fig. 3 of the drawing, and with its leg directed radially of the hinge axis. On the outer faces of the arcuate gage member l5 are provided degree graduations 6 and proportional graduations I1 which are selectively employed in the setting of the instrument for use.

Fixed on the surface of the plate I 0 which supports the blade II is a guide member l8 wherethrough the member l5 slidably passes. As shown in Fig. 4 Of the drawing, the member l5 passes through a slot in the guide member l8 which corresponds in shape to the cross-section of the member It. The free edge of the member I8 is provided with a flange I 9 and a binding screw 20 which serves, when screwed up, to hold the member IS in adjusted position, and, when released, to allow the member l5 to slide freely through the plate l8 for adjustment of the angular relation.

The particular design of the U-shaped, arouate member I5 is of considerable significance. An instrument used by carpenters and workers in the field is subjected to vary hard use and must retain its accuracy under severe conditions. The radially directed flanges of the U-shaped member 15 stiffen it strongly against flattening inwardly or bending outwardly with consequent failure of the member to slide thru its guide 18. The channel shape of the member also resists bending and distortion in a direction perpendicular to the calibrated faces. The cooperation of this member 15 with the U-shaped slot in its guide {8 also gives greater rigidity, sturdiness and accuracy to the whole gage structure.

In the use of the invention. to cut a bevel on the eave ends of such rafters as are shown at R in the various diagrams, it is only necessar to form What may be termed a simple bevel. For this purpose the pitch angle of the rafter is obtained from the construction drawings and the gage member I5 is set to that angle. The plate M is laid on what Will be the top faces of the rafters with the blade ll extending along a side of the rafter. A scribe line is then drawn along the blade on the rafter side and the. rafter out along this line.

The manner of laying off compound bevels such as exist in hip rafters as indicated at R is best shown by reference to Figures 8, 9 and 10. Here, from the drawings, the bevel. inone direc- 4 tion is laid oil as for a single bevel, a line such as L being scribed. Now, using the angle at right angles to that just used, the plates ID and I4 are adjusted thereto. The hinge edge of the plate In is then lined up with the line H and the blade ll positioned to lie in contact with the face of the rafter and a line scribed as at L'. The rafter is then out along the lines L and L. Thus any form of compound bevel foraroof joint may be laid' 011. i

What is claimed is:

In a device for the purpose described, a pair of rectangular plates hingedly connected along corresponding edges, an arcuate graduated member having one end attached to the free edge of one plate and extending concentrically of the hinge axls,,said member being U-shaped in crosssection with the legs thereof directed radially and with the graduations on the outer faces of said legs, a guide carried by the free edge of the other plate having a- U-shaped guide slot therein slightly larger than the cross-sectional dimensions of said arcuate member and having said arcuate member extending therethrough, a clamping screw carried by the guide for engagement with the arcuate member, and a scriber guiding bladecarried by one of said plates.

GUS A. HOLMBERG.

REFERENCES CITED.

The following references are. of record in the file of this patent? UNITED STATES PATENTS Smith June 30', 194-2 

